Precision-ratioed fluid mixing and dispensing unit



FIG. 1 is a front and left side perspective view of a precision-ratioed fluid mixing and dispensing unit showing our new design, the broken-line disclosure of a stand being for illustrative purposes only and form no part of the claimed design;

FIG. 2 is an enlarged front elevational view thereof;

FIG. 3 is an enlarged right side elevational view thereof;

FIG. 4 is an enlarged left side elevational view thereof;

FIG. 5 is an enlarged rear elevational view thereof;

FIG. 6 is an enlarged top plan view thereof; and,

FIG. 7 is an enlarged bottom plan view thereof. 

The ornamental design for a precision-ratioed fluid mixing and dispensing unit, as shown and described. 